Gold Member Since 2007
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Ningbo Rilson Sealing Material Co., Ltd.

Ring Joint Gaskets, Ring Type Joint Gasket, Metal Gasket manufacturer / supplier in China, offering Ring Joint Gasket (RTJ, SS316L, etc), R-Series Ring Joint Gaskets, PTFE Gland Packing and so on.

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Supplier Homepage Product Gasket Series Ring Joint Gasket Ring Joint Gasket (RTJ, SS316L, etc)

Ring Joint Gasket (RTJ, SS316L, etc)

FOB Price: US $1-2,000 / Piece
Min. Order: 5 Pieces
Min. Order FOB Price
5 Pieces US $1-2,000/ Piece
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Production Capacity: 200, 000PC/Month
Transport Package: Wooden Case
Payment Terms: L/C, T/T

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Basic Info
  • Model NO.: rs2
  • Shape: O-Ring
  • Trademark: Rilson
  • Origin: China
  • Material: Metal
  • Standard: Standard
  • Specification: Standard, API, ASME
Product Description
Ring Joint Gaskets:

Ring type gaskets are primarily used in the Oil, Gas and Petrochemical industries to seal flanged connections subject to high pressure and temperatures, and form a metal to metal seal with the flanges. The gaskets fully comply with the ASME B16.20 standard and the API spec 6A requirements (where applicable). All gaskets complying to API Standard 6A are marked with API Monogram Licence No as per API-6A (PSL4). The gaskets meet the rigid quality requirements for Ring Joint Gaskets set by the American Petroleum Institute (API).

Materials includes Soft Iron, Low Carbon Steel, F5 Alloy Steel, 410 Alloy Steel, SS304, SS304L, SS316, SS316L, SS347, SS321, Nickel Alloy 625 & 825, Duplex, Super Duplex, Monel & other materials available.

Rilson RTJ gaskets are manufactured in accordance with API-6A and ASME B16.20 specifications and come in four basic profiles:

R type (oval and octagonal) solid sections to fit standard ring joint flanges with trapezoidal grooves.
Types RX and BX with complex bevelled edge sections for wellhead pressures exceeding 700bar

These basic shapes are used in a variety of applications with pressures up to 20, 000 PSI. The dimensions are standardized and require specially grooved flanges by where a corresponding "R" or "BX" number is assigned for pipe size and pressure class for gasket identification.

Standard materials
Soft iron.
Low carbon steel.
Alloy steels: F5, 410.
Stainless steels: 304, 304L, 316, 316L, 321, 347.






Type Pressure Mpa
Oval 70
Octogonal 70
Rx 70
Bx 150







 Material:
Material Identification Max,Hard Temperature(°C)
SoftIron D 90 540
Low Carbon Steel S 120 540
5Cr0.5Mo A182-F5 130 650
SS304 SS304 160 800
SS316 SS316 160 800
SS316L SS316L 150 800
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